I either handed them down to extended family members or in the past several upgrade cycles I trade them in on the AT&T Next program. The older ones may be worth something, but they no longer belong to me. They belong to my kids or grandkids. If they want to sell them, they are welcome to do so. I don't need the money and the hassle isn't worth it to put them on eBay.
Thanks for the advice, though.
Another thing that can be done with ‘old phones’ is they can be donated to women’s and childrens’ protection charities.
The phones can be used to call 911 even without a carrier or a SIM(IIRC). Be sure to include any charging devices...............